Author
Topic: 85 1.2 L2 not sharp at 1.2 (Read 8810 times)

hammy

Does anyone have problem getting sharp image at 1.2? i even tried manual focus and AFMA. i only get sharp image at 2.0 and up. should i return for different copy?. i bought it recently just to use at 1.2 since i heard so many review on how sharp it is at 1.2 to 2.0. Any thought?

Does anyone have problem getting sharp image at 1.2? i even tried manual focus and AFMA. i only get sharp image at 2.0 and up. should i return for different copy?. i bought it recently just to use at 1.2 since i heard so many review on how sharp it is at 1.2 to 2.0. Any thought?

I find it pretty sharp' at f1.2....getting very sharp .....quickly on the way to f2...

I use it at ....below f4...maybe f2 .........mostly f1.2...for effect....------it has to be MA'd just right in the distance you use it...AND you may as well take a few shots....for each sample...because it is hard to repeat the shot-and focus point...

as Menace says...dial it in ...really try to get it on-the-money ...then use it there...if you dont see the sharpness... send it back....

like an x-15 with a micro-crack in the air-frame....it wont ever get there...with some small limitation built-in

Does anyone have problem getting sharp image at 1.2? i even tried manual focus and AFMA. i only get sharp image at 2.0 and up. should i return for different copy?. i bought it recently just to use at 1.2 since i heard so many review on how sharp it is at 1.2 to 2.0. Any thought?

thanks

Before you return it, do some testing on tripod in good light to see if the lens is the problem. It would be even better if remote shutter release is used.

Before you return it, do some testing on tripod in good light to see if the lens is the problem. It would be even better if remote shutter release is used.

this. when i first got my 85 II, i shot a casual event with it shooting wide open the entire night.

when i got home, i previewed the images on a screen and found all of it to be hopelessly out of focus.

propped it onto a tripod and ran it through a battery of tests with MLU on center point - turns out i sucked shooting @ 1.2

i installed a focussing screen that helps make things snappier at larger apertures and makes manually focussing possible with such extreme apertures as well. manual focus is still tricky, but now possible.

Return it if thats true. A $2000 lens that doesn't work in the range you bought it for is a waste, given your adjustments weren't it. Sorry. My copy just got last friday is spot on from what i can tell but i will test it more soon.

canon rumors FORUM

I think all is ok with your lens, you could check it using live view and then normal af from tripod shooting flat subject which is parallel to focal plane.Please note that at f1.2 you have very shallow DoF , e.g for 2 m distance it is only (+-)2cm. So if you use f1.2 handheld in one shot AF mode then you would have very high probability that shot will be oof due to time lap between the timepoint you got the focus and timepoint you relesed the shutter. In this timelap your camera could move out of focus as you body is not tripod and you could not keep it so steady. This is something that a lot of people just do not realize.To get 100% focus nailed shots handheld at f1.2 you need to use AI Servo to compensate for body/camera position shifts so that subject is tracked and focus is maintained.Also use single point AF so you are sure that lens focused on what you want. If you use 1Dx then use spot AF within single point AF to focus exactly on what is required especially on objects which are diagonal to focusing plane. Even single point af could cover some areas that are out of shallow DoF for 1.2All that works perfectly well for 1Ds M3 and 1Dx.Hope this could be useful for you and others